Sucker Rods. Main Technical Parameters. Nominal dia mm(in) 15.88(5/8) 19.05(3/4) 22.23(7/8) 25.40(1) (1 1/8) Nominal outer dia.

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1 Sucker Rods The sucker rod, an essential part in the rod production system, is used to connect the pumping unit on the ground and the oil well pump down in the well.products comply with Specifications of Sucker Rods (API Spec 11B) and other related standards, and have acquired the authorization to use Official API Monogram.The company produces K, C, D or HL sucker rods with various specifications complying API s requirements. Technical Performance & Characteristics 1. Advanced online fault detection, hardening, continuous overall tempering and ball blast techniques are incorporated so that mechanical strength and overall performance are enhanced. 2. Threads are processed on special numeral control lathes avoiding any rotation of the rod and then subject to roll forming so as to ensure high precision, reliable performance and extended service life. Main Technical Parameters Nominal dia mm(in) 15.88(5/8) 19.05(3/4) 22.23(7/8) 25.40(1) (1 1/8) Nominal outer dia. of threads mm(in) Outer dia. of clamps mm(in) Standard length mm(ft) 23.81(15/16) 26.99(1 1/16) 30.16(1 3/16) 34.93(1 3/8) 39.69(1 9/16) 38.10(1 1/2) 41.28(1 5/8) 46.04(1 13/16) 55.56(2 3/16) 60.33(2 3/8) 9140(30); 8000(26); 7620(25)

2 Mechanical Performance Indexes Grade Min. yield strength MPa(psi) Min. intensity of tension MPa(psi) Max. intensity of tension MPa(psi) K C 414(60000) 620(90000) 793(115000) D 586(85000) 793(115000) 965(140000) HL 793(115000) 965(140000) 1195(173339) Pony Rods Specifications: Pony Rods Standard:API Spec 11B Size: 5/8"-1 1/8" Grade: K,C,D and HL Material: Carbon Steel Pony Rods/ Sucker Rod Grade C sucker rod: Moderate strength, not susceptible to sulfide stress cracking, suitable in sour medium. Grade D sucker rod: Made of quality heat treated steel alloy, with high tensile and yield strength; suitable for non-corroding or mildly corroding environment. Grade K sucker rod: With good corrosion resistance in H2S, CO2 and NaCl media, superior tensile strength. Grade HL and HY sucker rod: High strength; structure and size matching with grade D sucker rod; withstanding 966-1, 136 MPa (140, , 720 psi); suitable for deep and large displacement wells. Mechanical Properties of Pony Rods

3 Grade Yield strength Tensile strength Elongation Reduction of MPa (psi) MPa (psi) % area % K 372 (53, 940) (84, , 985) C 414 (60, 030) (89, , 985) D 586 (84, 970) (114, , 925) HL (114, , ) HY MPa (psi) MPa (psi) HRC Surface HB Core 540 (78, 300) 980-1, 176 (142, , 520) Polished Rods 1.Sucker Rod for coal-bed gas production is an important component to connect surface pumping unit with down-hole pump in coal-bed gas rod production system. 2.We mainly produce 6 sorts and over 20 specifications of rods. 3.They are grade D rod, grade H ultra-strength rod, hollow rod, polished rod, pony rod and continuous carbon fiber rod. 4.Steel continuous sucker rod and continuous carbon fiber currently take the lead place at home. Sucker rods and polished rods of D spec. Class are designed for service in more severe conditions and have a higher fatigue strength in corrosive-active medium. The used method of hardening is heat treatment with subsequent surface shot blasting. The polished rods can be additionally covered with corrosion-resistant chromium coating. All rods are manufactured on the up-to-date foreign and home equipment and are made of high-grade alloy steels melted in the electric furnace. In the process of production the bar passes full ultrasonic incoming inspection and the finished rods are subjected to comparative fatigue test in a corroding medium according to a special procedure.

4 General Dimensions and Tolerances for Polished Rod Nominal Size 1-1/8 (in) 1-1/4 (in) 1-1/2 (in) in. mm in. mm in. mm Outside Diameter Nominal Diameter of Pin-thread Dimension Tolerances Dimension for reference Sinker Bars Sinker bars provide extra weight on the rod string to help keep the rod string straight, and in tension. If no sinker bars are present on the bottom of the rod string in deep, deviated, or big bore pumps, the rods will buckle, bend, and go into compression, causing rod parting and pump failure. sinker bars can Increase production by keeping the rods in tension and making the total rod stretch decrease, which allows the pump to be more efficient. Our sinker bars are manufactured from special quality hot rolled carbon manganese steel. Sinker bar dimensions and tolerances confirm to API Spec. 11B latest edition and AISI steel products manual. Sinker bar has a reduced on one end for elevator seating and lifting. Pin lank are machined and dimensions gauged. Pin threads are cold-formed to strengthen the thread from fatigue. An inhibitor is applied to each pin and thread protector installed. An oil soluble coating protects sinker bars from atmospheric corrosion in storage. Sinker bars are bundle to prevent handling damage during transportation.

5 Main Technical Parameters Specification specifications of Diameter of nominal diameter Length of length of s connecting sucker rod(mm) of the thread (in) rod(ft) fishing neck(in) (in) rod (in) 1-1/ /16 5/8 1-3/ / /16 3/4 1-5/ /16 7/8 Sucker Rod Coupling Above products accord with API Spec 11B. coupling thread is machined by roll finishing.they are of high tensile strength, good internal toughness,good interchangeability and strong generality.

6 Sucker rod coupling 3/4 7/8 1 Grade 19-T 22-T 25-T O.D(mm) 41.05~ ~ ~55.73 Minimum lengh(mm) 101.6~ ~ ~ Material AISI 5140 AISI 5140 AISI 5140 Hardness 56-62HRA 56-62HRA 12-23HRA Threads per inch(piece/inch) Weight (kg) Standard reference API 11B API 11B API 11B Material Standard Shape Size Head code Payment Surface treatment Thread Carbon steel,stainless steel DIN NPT BS Equal/Barrel reducing any size available Round/circulal Hex head T/T or L/C Electrical galvanized, Hot galvanized NPT/BSPT/DIN/RUSSIAN

7 sucker rod guides Sucker rod centralizer/ sucker rod guide Type: Nylon sucker rod centralizer, anti- partial-wear sucker rod centralizer, roller type sucker rod centralizer Size: 5/8", 3/4", 7/8", 1", 1-1/8" Ucker rod centralizer used in pumping well, it's a tool which can set upright the sucker rod, and protect the sucker rod wiping with tubing pipe, we can product wheel centralizer, rod shaped centralizer, twist centralizer. Operational principle: 1. Wheel centralizer: When the sucker rod works the wheel rolls on tubing inside. It can avoid the sucker rod to rub with the tubing pipe. 2. Rod shaped centralizer: When the sucker rods work, nylon block touches the tubing inside, it can avoid the sucker rod to rub with the tubing pipe. The nylon block can rotate, then the rub is even wear. The user only change the nylon block replace rod body, can save fabrication-cost. 3. Twist centralizer: Cost of it is low, operate easily.